attachment_link │ filter-hook │ WP 2.0.0

Filters the permalink for an attachment.

Usage

add_filter( 'attachment_link', 'wp_kama_attachment_link_filter', 10, 2 );

/**
 * Function for `attachment_link` filter-hook.
 * 
 * @param string $link    The attachment's permalink.
 * @param int    $post_id Attachment ID.
 *
 * @return string
 */
function wp_kama_attachment_link_filter( $link, $post_id ){

	// filter...
	return $link;
}

$link(string)

The attachment's permalink.

$post_id(int)

Attachment ID.

Changelog

Where the hook is called

return apply_filters( 'attachment_link', $link, $post->ID );

Where the hook is used in WordPress